CN104293260A - Double-component modified urea formaldehyde resin adhesive for E0-grade artificial board - Google Patents
Double-component modified urea formaldehyde resin adhesive for E0-grade artificial board Download PDFInfo
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- CN104293260A CN104293260A CN201410536402.3A CN201410536402A CN104293260A CN 104293260 A CN104293260 A CN 104293260A CN 201410536402 A CN201410536402 A CN 201410536402A CN 104293260 A CN104293260 A CN 104293260A
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- formaldehyde resin
- modified urea
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Abstract
The invention discloses a double-component modified urea formaldehyde resin adhesive for an E0-grade artificial board, belonging to the technical field of urea formaldehyde resin adhesives. The double-component modified urea formaldehyde resin adhesive is prepared from the following raw materials in parts by weight: 50-150 parts of a curing agent for modified urea formaldehyde resin glue, 5-70 parts of a modified urea formaldehyde resin adhesive and 5-60 parts of flour, wherein the curing agent for the modified urea formaldehyde resin glue and the modified urea formaldehyde resin adhesive are both specifically prepared. Aiming at a double-component modified urea formaldehyde resin adhesive obtained in the prior art, the adhesive disclosed by the invention has excellent storage stability, water resistance and bonding strength, is low in free formaldehyde release, has the price much lower than that of an existing E0-grade wood adhesive, is good in comprehensive performance, and can meet the requirements of environmental friendliness and practicability.
Description
Technical field
The invention belongs to urea-formaldehyde resin adhesive technical field, particularly a kind of E
0the two component modified urea-formaldehyde resin adhesive of level wood-based plate.
Background technology
Along with the fast development of China's economy, the rapid raising of living standards of the people, wood-based plate is more and more widely used in the industries such as Furniture manufacture, stereo set, construction and decoration, and wherein, furniture manufacturing industry and construction and decoration industry account for more than 90%.Wood-based plate especially glued board and Blockboard has huge market at furniture manufacturing industry and building trade, mainly for the manufacture of the indoor environment being in high humidity during the purposes such as high-grade office furniture, integral cabinet, locker, not only require that the furniture of Blockboard and plywood making has minimum burst size of methanal, namely burst size of methanal reaches the E of national regulation
1level, does not work the mischief to HUMAN HEALTH; And require that these furniture have good moisture resistance and dimensional stability, expand after making it to be unlikely to absorb moisture, cracking is even out of shape, distortion destroys.
Traditional urea-formaldehyde resin is difficult to the requirement meeting burst size of methanal and moistureproofness, so the modified urea-formaldehyde resin being necessary to work out a kind of low burst size of methanal and meeting environment service requirements.
Summary of the invention
The invention provides a kind of E
0the two component modified urea-formaldehyde resin adhesive of level wood-based plate, be made up of three kinds of raw materials, raw material is simple, reacts gentle easy to control, reproducible.E is compared with the burst size of methanal such as solid wooden compound floor glued board and Blockboard of this glue laminated
0level also will a low order of magnitude, and use cost is lower.Described technological method is as follows:
Embodiments provide a kind of E
0the two component modified urea-formaldehyde resin adhesive of level wood-based plate, is made up of the raw material of following parts by weight: modified urea-formaldehyde resin glue solidifying agent 50-150 part, modified urea-formaldehyde resin adhesive 5-70 part and flour 5-60 part.
Wherein, modified urea-formaldehyde resin glue solidifying agent in the embodiment of the present invention is the patent (denomination of invention is a kind of modified urea-formaldehyde resin glue solidifying agent and preparation method thereof) of 201410494312.2 from application number, and its concrete composition is made up of the raw material of following parts by weight: Vinyl Acetate Monomer 40-90 part, (methyl) acrylic ester monomer 0-60 part, function monomer 1-20 part, cross-linking monomer 5-30 part, emulsifying agent 0-10 part, chain-transfer agent 0-3 part, initiator 0.1-2 part and deionized water 50-300 part.Wherein, the concrete composition of aforementioned each raw material refers to the description of patent.。Its preparation method is divided into two kinds, and method one comprises the following steps:
pre-emulsification: add the deionized water of 40%-60% and the emulsifying agent of 0%-60% in pre-emulsification still, after stirring, add Vinyl Acetate Monomer, (methyl) acrylic ester monomer, cross-linking monomer, function monomer and chain-transfer agent successively, continue to stir and carry out pre-emulsification, obtain pre-emulsion stand-by.
emulsification: the deionized water and the residual emulsifier that first add 20%-40% in reactor, after stirring, is warming up to 50 DEG C-90 DEG C, adds the step of 5%-20%
the pre-emulsion obtained, then stirs and is warming up to 55 DEG C-90 DEG C, add the initiator solution of 20%-40%, slowly heat up in reactor, maintains temperature of reaction at 55 DEG C-90 DEG C, after 15min-45min, starts in reactor, to drip remaining step simultaneously
the pre-emulsion obtained and the initiator solution of 50%-90%, dropwise in 3h-5h, after above-mentioned pre-emulsion and initiator solution dropwise 5min-120min, remaining initiator solution is added in reactor, at 80 DEG C-98 DEG C insulation 20min-50min after adding, be warming up to 90 DEG C-98 DEG C again, insulation 20min-120min.Wherein, aforesaid initiator solution is mixed by the deionized water of whole initiator and 10%-40%.
discharging: after insulation terminates, cooling material, obtains modified urea-formaldehyde resin glue solidifying agent.
In aforementioned preparation process, deionized water raises foot 100%, and each raw material uses with mass percent.Its concrete synthetic example refers to the patent that application number is 201410494312.2.
Or method two comprises the following steps:
monomer solution
preparation: cross-linking monomer and function monomer are dissolved in the deionized water of 10%-50%, are stirred to mix completely and obtain monomer solution
.
soapless seed emulsion polymerization: add the deionized water of 20%-90%, the Vinyl Acetate Monomer of 1%-10%, (methyl) acrylic ester monomer of 0%-10%, the chain-transfer agent of 0%-40% and step in a kettle. while stirring
the monomer solution of the 10%-50% obtained
, and start to heat up simultaneously.When temperature rises to 50 DEG C-80 DEG C, add the initiator solution of 5%-50%.Start slowly to heat up after blue light (68 DEG C-82 DEG C appearance) appears in system, start to drip remaining step after insulation 0min-60min
the monomer solution obtained
, monomer solution
initiator solution with 50%-70%, dropwises in 1h-8h, treats monomer solution
, monomer solution
dropwise rear insulation 0min-90min with initiator solution, drip remaining initiator solution, be incubated 0 min-90min, be warming up to 70 DEG C-98 DEG C insulation 10min-120min.Wherein, aforesaid initiator solution is mixed by the deionized water of whole initiators and 10%-40%.Wherein, aforesaid monomer solution
for the mixture of remaining Vinyl Acetate Monomer, remaining (methyl) acrylic ester monomer and remaining chain-transfer agent.
discharging: after insulation terminates, cooling discharge, obtains modified urea-formaldehyde resin glue solidifying agent.
In aforementioned preparation process, deionized water raises foot 100%, and each raw material uses with mass percent.Its concrete synthetic example refers to the patent that application number is 201410527911.X.
Wherein, modified urea-formaldehyde resin adhesive in the embodiment of the present invention is the patent (denomination of invention is a kind of modified urea-formaldehyde resin adhesive and preparation method thereof) of 201410527911.X from application number, its concrete composition is made up of the raw material of following parts by weight: the oxalic dialdehyde (aqueous solution, common commodity concentration, be specifically as follows the aqueous solution of massfraction 40%) 10-200 part, urea 10-100 part and trimeric cyanamide 0-50 part, it comprises the following steps:
(1) oxalic dialdehyde of aequum is answered in negate, puts in reactor, stirs, and regulates its pH to be that 3.0-10.0(uses mineral alkali to regulate, comprises one or more in sodium hydroxide, potassium hydroxide, ammoniacal liquor).
(2) oxalic dialdehyde that urea, trimeric cyanamide and first step (1) obtain is put in reactor react, temperature reacts 10min-50min at 60 ± 20 DEG C, wherein, first oxalic dialdehyde: the mol ratio of (integral molar quantity of urea and trimeric cyanamide) is 0.8-2:1, namely first oxalic dialdehyde molar weight be the 0.8-2 of the molar weight of urea and the molar weight sum of trimeric cyanamide doubly.
(3) (i.e. remaining oxalic dialdehyde, preferably can ensure that the pH of reaction product is 6.0-8.0 to oxalic dialdehyde step (2) gained mixture and second batch step (1) obtained; Preferably, in order to control molecular structure, part urea and trimeric cyanamide can be added in step (2), and in step (3), add remaining urea, trimeric cyanamide and oxalic dialdehyde, be conducive to the curing cross-linked in later stage) react under said temperature (60 ± 20 DEG C), reaction times 0.2h-8h, namely cooling discharge obtains finished product modified urea-formaldehyde resin adhesive.
Aforementioned two kinds of raw materials are with the use of having best result of use.
Wherein, the flour in the embodiment of the present invention is whole meal flour.
Wherein, the E that provides of the embodiment of the present invention
0the two component modified urea-formaldehyde resin adhesive of level wood-based plate can be used for the wood-based plates such as glued board, Blockboard and medium and high density fibre panel.
Wherein, aforementioned E
0the level wood-based plate preparation method of two component modified urea-formaldehyde resin adhesive is:
(1), under room temperature, in the reactor that band stirs, add modified urea-formaldehyde resin glue solidifying agent 50-150 weight part, add modified urea-formaldehyde resin adhesive 5-70 weight part while stirring.
(2) add flour 5-60 weight part when treating that system stirs bubble-free, can cylinder gluing use after system is completely even.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is: the two component modified urea-formaldehyde resin adhesives being directed to prior art gained have excellent stability in storage, water tolerance and bonding strength, free formaldehyde release is low, and price is far below existing E
0level wood adhesive, over-all properties is good, meets environmental protection real requirement.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below the present invention is described in further detail.Following number if no special instructions, is parts by weight.
Embodiment 1
100 parts of modified urea-formaldehyde resin glue solidifying agent are joined in stirred pot, add the modified urea-formaldehyde resin adhesive of 20 parts while stirring, after system mixes, add 32 parts of flour, stir about 30min is homogeneous white to system or light yellowly can goes up cylinder applying glue.
Embodiment 2
Join in stirred pot by 150 parts of modified urea-formaldehyde resin glue solidifying agent, add the modified urea-formaldehyde resin adhesive of 27 parts while stirring, add 24 parts of flour after system mixes, stir about 25min is that homogeneous white can go up cylinder applying glue to system.
Embodiment 3
Join in stirred pot by 120 parts of modified urea-formaldehyde resin glue solidifying agent, add the modified urea-formaldehyde resin adhesive of 28 parts while stirring, add 35 parts of flour after system mixes, stir about 28min is that homogeneous white can go up cylinder applying glue to system.
Embodiment 4
130 parts of modified urea-formaldehyde resin glue solidifying agent are joined in stirred pot, add the modified urea-formaldehyde resin adhesive of 20 parts while stirring, after system mixes, add 40 parts of flour, stir about 30min is homogeneous white to system or light yellowly can goes up cylinder applying glue.
Two component modified urea-formaldehyde resin adhesives of above-described embodiment 1-4 are adopted to be applied to the preparation of glued board and Blockboard.
When being applied to plywood production, select the five laminate articles for use that the two component urea-formaldehyde resin adhesive of the present invention makes, after testing, every test item all meets Standard, in table 1.
Test size: 500mm × 500mm × 4mm.
Testing standard: GB/T 9846-2004; GB/T 18580-2001.
Table 1
When being applied to Blockboard production, select the five laminate articles for use that the two component urea-formaldehyde resin adhesive of the present invention makes, after testing, every test item all meets Standard, in table 2.
Test size: 500mm × 500mm × 14mm.
Testing standard: GB/T 5849-2006; GB/T 18580-2001.
Table 2
In addition in the test of stability and water tolerance, the stability in storage of this pair of component urea-formaldehyde resin adhesive was more than four months, and the wood-based plate using this pair of component urea-formaldehyde resin adhesive to make boils and do not ftracture for 4 hours in 63 DEG C of water.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. an E
0the two component modified urea-formaldehyde resin adhesive of level wood-based plate, is characterized in that, be made up of the raw material of following parts by weight: modified urea-formaldehyde resin glue solidifying agent 50-150 part, modified urea-formaldehyde resin adhesive 5-70 part and flour 5-60 part.
2. E according to claim 1
0level wood-based plate modified urea-formaldehyde resin sticks with glue agent, it is characterized in that, described modified urea-formaldehyde resin glue solidifying agent is made up of the raw material of following parts by weight: Vinyl Acetate Monomer 40-90 part, (methyl) acrylic ester monomer 0-60 part, function monomer 1-20 part, cross-linking monomer 5-30 part, emulsifying agent 0-10 part, chain-transfer agent 0-3 part, initiator 0.1-2 part and deionized water 50-300 part.
3. E according to claim 2
0level wood-based plate modified urea-formaldehyde resin sticks with glue agent, and it is characterized in that, the preparation of described modified urea-formaldehyde resin glue solidifying agent comprises the following steps:
pre-emulsification: add the deionized water of 40%-60% and the emulsifying agent of 0%-60% in pre-emulsification still, after stirring, add Vinyl Acetate Monomer, (methyl) acrylic ester monomer, cross-linking monomer, function monomer and chain-transfer agent successively, continue to stir and carry out pre-emulsification, obtain pre-emulsion;
emulsification: the deionized water and the residual emulsifier that first add 20%-40% in reactor, after stirring, is warming up to 50 DEG C-90 DEG C, adds the step of 5%-20%
the pre-emulsion obtained, then stir and be warming up to 55 DEG C-90 DEG C, the initiator solution of 20%-40% is added in reactor, slow intensification, maintain temperature of reaction at 55 DEG C-90 DEG C, after 15min-45min, start the initiator solution simultaneously dripping remaining pre-emulsion and 50%-90% in reactor, dropwise in 3h-5h, after above-mentioned pre-emulsion and initiator solution dropwise 5min-120min, remaining initiator solution is added in reactor, at 80 DEG C-98 DEG C insulation 20min-50min after adding, be warming up to 90 DEG C-98 DEG C again, insulation 20min-120min, wherein, described initiator solution is mixed by the deionized water of initiator and 10%-40%,
discharging: after insulation terminates, cooling material, obtains modified urea-formaldehyde resin glue solidifying agent.
4. E according to claim 2
0level wood-based plate modified urea-formaldehyde resin sticks with glue agent, and it is characterized in that, the preparation of described modified urea-formaldehyde resin glue solidifying agent comprises the following steps:
monomer solution
preparation: cross-linking monomer and function monomer are dissolved in the deionized water of 10%-50%, are stirred to mix completely and obtain monomer solution
;
soapless seed emulsion polymerization: add the deionized water of 20%-90%, the Vinyl Acetate Monomer of 1%-10%, (methyl) acrylic ester monomer of 0%-10%, the chain-transfer agent of 0%-40% and the monomer solution of 10%-50% in a kettle. while stirring
, and start to heat up, when temperature rises to 50 DEG C-80 DEG C, add the initiator solution of 5%-50%; simultaneously After blue light appears in system, start to drip remaining monomer solution after insulation 0min-60min
, monomer solution
initiator solution with 50%-70%, dropwises in 1h-8h, treats monomer solution
, monomer solution
dropwise rear insulation 0min-90min with initiator solution, drip remaining initiator solution, be incubated 0 min-90min, be warming up to 70 DEG C-98 DEG C insulation 10min-120min, wherein, described initiator solution is mixed by the deionized water of initiator and 10%-40%, described monomer solution
for the mixture of remaining Vinyl Acetate Monomer, remaining (methyl) acrylic ester monomer and remaining chain-transfer agent;
discharging: after insulation terminates, cooling discharge, obtains modified urea-formaldehyde resin glue solidifying agent.
5. E according to claim 1
0level wood-based plate modified urea-formaldehyde resin sticks with glue agent, and it is characterized in that, described modified urea-formaldehyde resin adhesive is made up of the raw material of following parts by weight: oxalic dialdehyde 10-200 part, urea 10-100 part and trimeric cyanamide 0-50 part.
6. E according to claim 5
0level wood-based plate modified urea-formaldehyde resin sticks with glue agent, and it is characterized in that, the preparation of described modified urea-formaldehyde resin adhesive comprises the following steps:
(1) oxalic dialdehyde of aequum is answered in negate, puts in reactor, stirs, regulates its pH to be 3.0-10.0;
(2) oxalic dialdehyde that urea, trimeric cyanamide and first step (1) obtain is put in reactor react, temperature reacts 10min-50min at 60 ± 20 DEG C, wherein, first oxalic dialdehyde: the mol ratio of the total amount of urea and trimeric cyanamide is 0.8-2:1;
(3) gained mixture and second batch oxalic dialdehyde are reacted at the temperature disclosed above, reaction times 0.2h-8h, namely cooling discharge obtains described modified urea-formaldehyde resin adhesive.
7. E according to claim 1
0level wood-based plate modified urea-formaldehyde resin sticks with glue agent, and it is characterized in that, described flour is whole meal flour.
8. the E according to any one of claim 1-7
0the two component modified urea-formaldehyde resin adhesive of level wood-based plate, is characterized in that, can be used for glued board, Blockboard and medium and high density fibre panel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410536402.3A CN104293260B (en) | 2014-10-13 | 2014-10-13 | A kind of E0 level wood-based plate double-component modified urea-formaldehyde resin adhesive |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410536402.3A CN104293260B (en) | 2014-10-13 | 2014-10-13 | A kind of E0 level wood-based plate double-component modified urea-formaldehyde resin adhesive |
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| CN104293260A true CN104293260A (en) | 2015-01-21 |
| CN104293260B CN104293260B (en) | 2016-06-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105349074A (en) * | 2015-11-18 | 2016-02-24 | 广德县永彬竹木工艺品厂 | Bamboo anticorrosion adhesive and preparation method thereof |
| CN106433527A (en) * | 2016-12-02 | 2017-02-22 | 陈佩珊 | Waterborne adhesive composition and method for preparing same |
| CN106675472A (en) * | 2016-12-17 | 2017-05-17 | 浦北县建业胶合板有限责任公司 | Urea-formaldehyde resin adhesive and preparation method thereof |
| CN107383299A (en) * | 2016-05-16 | 2017-11-24 | 华南理工大学 | One kind is used to manufacture ecological floor modified urea-formaldehyde resin and preparation method thereof |
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| CN101624436A (en) * | 2009-08-03 | 2010-01-13 | 北京化工大学 | Environment-protective urea-formaldehyde resin with novel structure as well as preparation method and application thereof |
| US20110198028A1 (en) * | 2008-08-13 | 2011-08-18 | Dynea Oy | Low formaldehyde emission adhesive system |
| CN102241826A (en) * | 2011-05-09 | 2011-11-16 | 北京化工大学 | Modified lignin and urea-formaldehyde resin synthesized from same and preparation methods of modified lignin and urea-formaldehyde resin |
| CN103484046A (en) * | 2013-08-20 | 2014-01-01 | 湖北省宏源药业有限公司 | Manufacturing method of low-formaldehyde-release-amount plywood |
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2014
- 2014-10-13 CN CN201410536402.3A patent/CN104293260B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20110198028A1 (en) * | 2008-08-13 | 2011-08-18 | Dynea Oy | Low formaldehyde emission adhesive system |
| CN101624436A (en) * | 2009-08-03 | 2010-01-13 | 北京化工大学 | Environment-protective urea-formaldehyde resin with novel structure as well as preparation method and application thereof |
| CN102241826A (en) * | 2011-05-09 | 2011-11-16 | 北京化工大学 | Modified lignin and urea-formaldehyde resin synthesized from same and preparation methods of modified lignin and urea-formaldehyde resin |
| CN103484046A (en) * | 2013-08-20 | 2014-01-01 | 湖北省宏源药业有限公司 | Manufacturing method of low-formaldehyde-release-amount plywood |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105349074A (en) * | 2015-11-18 | 2016-02-24 | 广德县永彬竹木工艺品厂 | Bamboo anticorrosion adhesive and preparation method thereof |
| CN107383299A (en) * | 2016-05-16 | 2017-11-24 | 华南理工大学 | One kind is used to manufacture ecological floor modified urea-formaldehyde resin and preparation method thereof |
| CN106433527A (en) * | 2016-12-02 | 2017-02-22 | 陈佩珊 | Waterborne adhesive composition and method for preparing same |
| CN106675472A (en) * | 2016-12-17 | 2017-05-17 | 浦北县建业胶合板有限责任公司 | Urea-formaldehyde resin adhesive and preparation method thereof |
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| CN104293260B (en) | 2016-06-15 |
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